"""
数据常量模块 - 定义数据相关的常量
"""

# 资产类型常量
ASSET_TYPE_STOCK = "stock"       # 股票
ASSET_TYPE_FUTURE = "future"     # 期货
ASSET_TYPE_OPTION = "option"     # 期权
ASSET_TYPE_FUND = "fund"         # 基金
ASSET_TYPE_INDEX = "index"       # 指数
ASSET_TYPE_ETF = "etf"           # ETF